Improvement in sawing-machsnes



WILLIAM M. WRIGHT.

Improvement in Sawing Machines.

www i l @EN MVM UNITED STATES PATENT @einen WILLIAM M. WRIGHT, OFGALESBURG, ILLINOIS.

IMPROVEMENT IN SAWING-MACHlNES.

To all whom t may concern:

Be it known that I, WILLIAM M. WRIGHT, of the city of Galesburg, inthecounty of Knox and in the State of Illinois, have invented anImprovement in Sawing-Machines 5 and do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the annexed drawing making a part of this specification, inwhich like lettters of reference refer to like parts, and in which-Figurel represents a longitudinal elevation, the side of frame A beingremoved to show bar b,- Fig. 2, a plan of the same; Fig. 3, front viewof same; Fig. 4, front elevation of saw-sash C; Fig. 5, horizontalsection of same through the center, at the dotted line a a, Fig. 4.

This invention consists in mounting an ordinary cross-cut saw, havingthe usual bow above it, in the slot of a saw-sash or support, whichlatter is in turn mounted on a second sash with a vertical -slot thereinby means of an adjustable pivot or fastening. This latter sash isattached to the end of a horizontal connecting-rod resting .in abearing, and at the other end resting in a horizontal slide oscillatedby a pitman-rod and proper motor. A brace or feed-frame passes from thesaw-bow to the supporting-frame of the machine. 1

A represents a square frame or support for the horizontal oscillatingbar b, its pitman-rod c', and necessary gearing to work the bar and saw,and the slides d d; also, the horizontal cross-bar f, with its supportse e and sockets g g on either side of the frame A. B is the first orvertical sash, a semicircular frame, attached, by a pin, h, through alug at its back part, to the end ofthe oscillating bar b. This sashpresents in front a vertical face about three feet in length and two orthree inches in width, which face is divided lengthwise by avertical'slot similar to that shown at Ic in Figs. 4 and 5. C is thesecond sash, of

' the same shape and size as B, with the slot la in its face, in whichthe heel of the saw D slides down as fast as the saw does its work. (SeeFigs. 4 and 5.) It is adjustable at any required angle (carrying with itthe saw) by means of the adjustingibolt andnut in its bow, which boltpasses through the slot 1o in the sash B, and confines the sash C, toits place. Different working positions of this sash and'saw are shown bythe dotted lines in Fig. l, at C D'; at Fig. 2, C D,

and at Fig. 3, C 0. D is the saw, the blade being about iive feet inlength, With a bow-back carrying a longitudinal horizontal slot, m, inwhich works a bolt or pin, o, which conines thereto the slide n, in theupper part of which is pivoted a tubular socket, q, which receives theend of the feed-frame or brace E, to which it is elastically connectedby the spiral spring s. The heel of the saw is coniined within the slotk of the sash C by means of the blocks l l attached to the heel oneither side of the slot, the saw, of course, being always in the planeof the sash C. E, a feed-frame or brace for the saw, running from thesliding socket q in the top of the sawbow to the horizontal cross-barj',on which it is pivoted by means of the vertical eyes thereon and amovable pin, a, movable on account of the dispensing with the said framewhen the saw is set at other positions than vertical. This frame isdivided longitudinally, so as to pass the sash C as the saw falls.

The operation of this device is as follows: In making a verticalcross-cut the saw is adjusted (with its sash) as shown in Fig. 1, thesash being placed in such a manner, either higher or lower, by means ofthe bolt t', as to bring the saw to the proper level or commencement ofthe desired cut. The bar b being now set in motion carries its attachedsash B, the sash C, and saw D to and fro. The saw, as it cuts downward,is allowed to pass down the slot lf ofthe sash C, and when the heel ofthe same reaches the bottom of said slot the motion is stopped, and thesash C lowered by means ofthe adjusting-bolt t', to allow the saw tocomplete the out, if a'- deep one. During this time the feed-frameEsteadies the saw, allowing the bow of the latter to freely pass throughthe slide n, to which the said frame E isattached, the end of the latterhaving a slight play in the socket q of said slide ln. In making cuts atother angles from perpendicular it will be seen that all that isnecessary for this purpose will be to remove the feed-frame E byextracting the pins a, and p at either end of the frame E and adjust thesaw to the required angle by loosening the bolt z', which connects thesashes, and adjusting the sash C to the desired inclination. The saw, inthis case, is steadied by the hand of the operator, who holds the saw toits work by means of the handle r on top of the saw-bow.

What I claim as my invention is- 1. The vertical saw-sash B, having avertical slot, in combination with the adjustable saw-sash G, verticalslot k, and adjustable fastening i, substantially as for the purposesdescribed.

2. The combination of the sash B and G With the saw D and its blocks ll,substantially as and for the purposes described.

3. The saw D, When constructed With the blocks l l, the slot m, theslide n, pivoted socket q, in combination with the spring s andfeed-frame E With its pivot a and cross-bar f e e, substantially asdescribed.

4. In combination with the sash B, the oscillating bar b, slides d d,pitman-rod c', and frame A, substantially as and for the purposes setforth.

In testimony that I claim the foregoing crosscut sawing-machine I havehereunto set my hand this 12th day of September, A. D. 1871.

WILLIAM M. WRIGHT.

JAMES M. MoRsE. (130)

